Pacemaker implantation and analysis data
The atrial impedance observed between 240 and 803 Ω (mean 445.77 Ω) in 9 patients with atrial leads. Mean of sensing and pacing threshold of atrial leads were 2.44 and 0.86, respectively (5-95%, [0.5-5.6], and [0.25-3.5], respectively). The ventricular Impedance had mean of 557.88 Ω (5-95%, 285-1198) in left and 490.55 Ω (5-95%, 117-942) in right side (Table 4). The only significant difference in pacing threshold at follow up time was observed in leads locating in LV (p-value<0.001) with a mean follow up time of 14.73 months (SD, 9.18). However, the analysis for each types illustrated that rise in pacing threshold is only for the unipolar non-steroid-eluting leads.